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Concept of layering.OSI and TCP/IP Protocol Stacks; Basics of packet, circuit and virtual circuit-switching; Data link layer: framing, error detection, Medium Access Control, Ethernet bridging; Routing protocols: shortest path, flooding, distance vector and link state routing; Fragmentation and IP addressing, IPv4, CIDR notation, Basics of IP support protocols (ARP, DHCP, ICMP), Network Address Translation (NAT); Transport layer: flow control and congestion control, UDP, TCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTP, Email.

.$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{2020}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 2 &1&1&2&1&3&2&3&2&3&1&2&3
\\\hline\textbf{2 Marks Count} & 4 &4&3&2&4&2&3&1&4&3&1&3&4
\\\hline\textbf{Total Marks} & 10 &9&7&6&9&7&8&5&10&9&\bf{5}&\bf{8}&\bf{10}\\\hline
\end{array}}}$$

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Most viewed questions in Computer Networks

7 votes
4 answers
82
tanenbaum computer networks
A $3000$km-long T1 trunk having Transmission time $1.544$ Mbps is used to transmit $64$byte frames using Go back -N. If the propagation speed is $6$ μsec/km, how many bits should the sequence numbers be?
A $3000$km-long T1 trunk having Transmission time $1.544$ Mbps is used to transmit $64$byte frames using Go back -N.If the propagation speed is $6$ μsec/km, how many b...
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23 votes
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86
GATE CSE 2013 | Question: 36
Determine the maximum length of the cable (in km) for transmitting data at a rate of $500$ Mbps in an Ethernet LAN with frames of size $10,000$ bits. Assume the signal speed in the cable to be $2,00,000$ km/s. $1$ $2$ $2.5$ $5$
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1 votes
1 answer
90
In a LAN network every system is identified by ?
In a LAN network every system is identified by (a) Name (b) MAC Address (c) IP Address (d) Serial number given by manufacturer the answer is given as IP address but according to me it should be MAC address.
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92
Formula for calculating efficiency of ethernet
What formula to use for calculating efficiency of ethernet is it $\frac{1}{1+6.44a}$ or $\frac{1}{1+5.44a}$ or $\frac{1}{1+5a}$​ I saw three versions for calculating the same thing in different places. I want to know which one is correct.
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44 votes
3 answers
94
GATE CSE 2017 Set 2 | Question: 20
The maximum number of $\textsf{IPv4}$ router addresses that can be listed in the record route (RR) option field of an $\textsf{IPv4}$ header is______.
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1 votes
3 answers
95
A sender sends a series of packets to the same destination using 5 bit sequence numbers.
A sender sends a series of packets to the same destination using 5 bit sequence numbers. If the sequence number starts with 0, what is the sequence number after sending 100 packets ?
A sender sends a series of packets to the same destination using 5 bit sequence numbers. If the sequence number starts with 0, what is the sequence number after sending 1...
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46 votes
5 answers
96
GATE CSE 2015 Set 3 | Question: 38
In the network $200.10.11.144/27$, the $\text{fourth}$ octet (in decimal) of the last $\text{IP}$ address of the network which can be assigned to a host is _______.
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1 votes
1 answer
98
We need to send 256 kbps over a noiseless channel with a bandwidth 20 KHz.How many signal levels do we need?
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